WO2010078326A1 - Dispositif de protection de moteur de pompe immergée - Google Patents

Dispositif de protection de moteur de pompe immergée Download PDF

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Publication number
WO2010078326A1
WO2010078326A1 PCT/US2009/069688 US2009069688W WO2010078326A1 WO 2010078326 A1 WO2010078326 A1 WO 2010078326A1 US 2009069688 W US2009069688 W US 2009069688W WO 2010078326 A1 WO2010078326 A1 WO 2010078326A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
fluid
compensator
bellows
housing
Prior art date
Application number
PCT/US2009/069688
Other languages
English (en)
Inventor
Arthur I. Watson
Christopher E. Featherby
Original Assignee
Schlumberger Canada Limited
Services Petroliers Schlumberger
Schlumberger Holdings Limited
Schlumberger Technology B.V.
Prad Research And Development Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schlumberger Canada Limited, Services Petroliers Schlumberger, Schlumberger Holdings Limited, Schlumberger Technology B.V., Prad Research And Development Limited filed Critical Schlumberger Canada Limited
Priority to CA2750182A priority Critical patent/CA2750182A1/fr
Publication of WO2010078326A1 publication Critical patent/WO2010078326A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
    • F04B47/04—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level the driving means incorporating fluid means
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/128—Adaptation of pump systems with down-hole electric drives

Definitions

  • a variety of production fluids are pumped from subterranean environments. Different types of submersible pumping systems may be disposed in production fluid deposits at subterranean locations to pump the desired fluids to the surface of the earth.
  • Production fluids e.g. petroleum
  • Fluids contained in the formation collect in the wellbore and are raised by the submersible pumping system to a collection point at or above the surface of the earth.
  • a typical submersible pumping system comprises several components, such as a submersible electric motor that supplies energy to a submersible pump.
  • the system further may comprise a variety of additional components, such as a connector used to connect the submersible pumping system to a deployment system.
  • Conventional deployment systems include production tubing, cable and coiled tubing. Additionally, power is supplied to the submersible electric motor via a power cable that runs through or along the deployment system.
  • the subterranean environment (specifically the well fluid) and fluids that are injected from the surface into the wellbore (such as acid treatments) contain corrosive compounds that may include carbon dioxide, hydrogen sulfide and brine water.
  • corrosive agents can be detrimental to components of the submersible pumping system, particularly to internal electric motor components, such as copper windings and bronze bearings.
  • the fluid can degrade the dielectric properties of the motor oil and the insulating materials of the motor components. Accordingly, it is highly desirable to keep these external fluids out of the internal motor fluid and components of the motor.
  • Submersible electric motors are difficult to protect from corrosive agents and external fluids because of their design requirements that allow use in the subterranean environment.
  • a typical submersible motor is internally filled with a fluid, such as a dielectric oil, that facilitates cooling and lubrication of the motor during operation.
  • a fluid such as a dielectric oil
  • heat is generated, which, in turn, heats the internal motor fluid causing expansion of the oil.
  • the motor cools and the motor fluid contracts when the submersible pumping system is not being used.
  • submersible electric motors are subject to considerable temperature variations due to the subterranean environment, injected fluids, and other internal and external factors. These temperature variations may cause undesirable fluid expansion and contraction and damage to the motor components.
  • the high temperatures common to subterranean environments may cause the motor fluid to expand excessively and cause leakage and other mechanical damage to the motor components.
  • These high temperatures also may destroy or weaken the seals, insulating materials, and other components of the submersible pumping system.
  • undesirable fluid expansion and motor damage can also result from the injection of high-temperature fluids, such as steam, into the submersible pumping system.
  • this type of submersible motor benefits from a motor fluid expansion system able to accommodate the expanding and contracting motor fluid.
  • the internal pressure of the motor must be allowed to equalize or at least substantially equalize with the surrounding pressure found within the wellbore. As a result, it becomes difficult to prevent the ingress of external fluids into the motor fluid and internal motor components.
  • a first type is a labyrinth type protector that uses the differences in the specific gravity of the well fluid and the motor fluid (e.g., oil) to separate the fluids.
  • a typical labyrinth may embody a chamber having a first passageway to the motor fluid and a second passageway to an undesirable fluid, such as the fluid in the wellbore.
  • the first and second passageways are generally oriented on opposite sides of the chamber to maintain fluid separation in a vertical orientation.
  • a second type is a piston type protector that moves axially in relation to the other components to adjust to a changing volume of the motor fluid.
  • a third type is a bellows or bag type protector, wherein the bellow or bag may be formed of metal or an elastomeric material.
  • the bellows type protectors provide two important functions: equalizing the fluid pressure within the motor and preventing well fluids (e.g., liquids and gases) from contaminating the motor fluid.
  • a motor protector comprises a housing defining a compensator chamber; a compensator disposed in the housing having a motor fluid end in fluid communication with a motor fluid and a well fluid end, the compensator axially moveable relative to the housing in response to the expansion and contraction of the motor fluid; and a port formed through the housing to provide fluid communication from exterior of the housing to the well fluid end of the compensator.
  • the compensator may be one selected from the group of a bellows and a plunger.
  • a submersible pump system comprises a pump disposed in a wellbore containing a wellbore fluid; a motor disposed in the wellbore, the motor comprising a motor fluid; and a motor protector disposed in the wellbore, the motor protector comprising a housing defining a compensator chamber; a port formed radially through the housing; and a bellows disposed in the housing, the bellows comprising an interior in fluid communication with the motor fluid and a well fluid end in fluid communication with the wellbore fluid via the port, the bellows axially expandable relative to the housing in response to the expansion and contraction of the motor fluid.
  • a submersible pump system comprises a pump disposed in a wellbore containing a wellbore fluid; a motor disposed in the wellbore, the motor comprising a motor fluid; and a motor protector disposed in the wellbore, the motor protector comprising: a plurality of axially extending, spaced apart elongate members defining a bellows chamber; and a bellows position in the bellows chamber, the bellows comprising an interior in fluid communication with the motor fluid and a well fluid end in fluid communication with the wellbore fluid through channels between the adjacent spaced apart elongate members.
  • Figure 1 is a schematic view of a submersible pump system apparatus according to one or more aspects of the present disclosure disposed in a wellbore.
  • Figure 2 is an expanded, schematic cut-away view of a motor protector comprising a bellows-type compensator in a contracted position according to one or more aspects of the present disclosure.
  • Figure 3 is an expanded, schematic cut-away view of a motor protector comprising a bellows-type compensator in an expanded position according to one or more aspects of the present disclosure.
  • Figure 4 is an expanded, schematic cut-away view of another embodiment of motor protector according to one or more aspects of the present disclosure.
  • Figure 5 is an expanded, schematic cut-away view of another embodiment of motor protector according to one or more aspects of the present disclosure.
  • first and second features are formed in direct contact
  • additional features may be formed interposing the first and second features, such that the first and second features may not be in direct contact.
  • the terms “up” and “down”; “upper” and “lower”; “top” and “bottom”; and other like terms indicating relative positions to a given point or element are utilized to more clearly describe some elements. Commonly, these terms relate to a reference point as the surface from which drilling operations are initiated as being the top point and the total depth of the well being the lowest point, wherein the well (e.g., wellbore, borehole) is vertical, horizontal or slanted relative to the surface.
  • fluidically coupled or “fluidically connected” and similar terms, may be used to describe bodies that are connected in such a way that fluid pressure (e.g., hydraulic, pneumatic) may be transmitted between and among the connected items.
  • fluid pressure e.g., hydraulic, pneumatic
  • in fluid communication is used to describe bodies that are connected in such a way that fluid can flow between and among the connected items. It is noted that fluidically coupled may include certain arrangements where fluid may not flow between the items, but the fluid pressure may nonetheless be transmitted. Thus, fluid communication is a subset of fluidically coupled.
  • FIG. 1 is a schematic of a submersible pumping system 20, depicted in the form of an electric submersible pumping system, according to one or more aspects of the present disclosure.
  • Pumping system 20 comprises a submersible pump 22, a submersible motor 24 and a motor protector 26.
  • pumping system 20 is designed for deployment in a well 28 within a geological formation 30 containing reservoir fluid 31, such as petroleum.
  • reservoir fluid 31 such as petroleum.
  • a wellbore 32 is drilled and lined with a wellbore casing 34.
  • Wellbore casing 34 may include a plurality of openings 36, e.g. perforations, through which fluid 31 (e.g., production fluid) flows into wellbore 32.
  • Fluid 31 may carry solids 33, depicted as particles (e.g., sand particles).
  • deployment system 38 may comprise tubing 40 connected to submersible pump 22 by a connector 42. Power is provided to submersible motor 24 via a power cable 44. Submersible motor 24, in turn, powers the submersible pump 22 which draws production fluid 31 (e.g., wellbore fluid, reservoir fluid) in through a pump intake 46 and pumps the production fluid to a collection location via, for example, tubing 40. In other configurations, the production fluid may be produced through the annulus formed between deployment system 38 and wellbore casing 34.
  • production fluid 31 e.g., wellbore fluid, reservoir fluid
  • the production fluid may be produced through the annulus formed between deployment system 38 and wellbore casing 34.
  • Motor protector 26 enables the reduction of differential pressure between fluid 31 in wellbore 32 and internal motor fluid within submersible motor 24 and motor protector 26.
  • the motor protector 26 also protects the internal motor fluid from exposure to deleterious elements of the surrounding wellbore fluid.
  • Motor protector 26 is depicted positioned below submersible motor 24, however the motor protector also can be designed for positioning in whole or in part above submersible motor 24.
  • FIG. 2 is an expanded sectional schematic of an embodiment of motor protector 26 of an electric submersible pump system 20 according to one or more aspects of the present disclosure.
  • motor protector 26 is disposed below motor 24.
  • a portion of motor 24 is depicted containing motor fluid 48 (e.g., oil) and disposing a portion of shaft 25.
  • motor fluid 48 e.g., oil
  • Motor protector 26 comprises a compensator 50 to provide volume compensation, for example, for the thermal expansion and contraction of motor fluid 48.
  • Compensator 50 depicted in Figures 2 and 3 is a bellows type compensator.
  • Compensator 50 is illustrated in a contracted position in Figure 2 and in the expanded position in Figure 3.
  • compensator 50 is a generally cylindrical member formed of an elastomeric material which may expand and contract axially and/or radially.
  • compensator 50 may be constructed of metal.
  • Bellows is used in the present disclosure to include metal and elastomeric devices unless expressly stated otherwise.
  • Bellows 50 is a generally cylindrical member having exterior surface 50a (e.g., perimeter). Bellows 50 may be accordion like to provide in particular axial expansion and contraction.
  • Compensator 50 is positioned in a compensator chamber 51 of a compensator housing 52 in the embodiment of Figure 2.
  • Compensator 50 comprises a well fluid end 54 and a motor fluid end 56.
  • Motor fluid 48 is in fluid communication with the interior 58 of compensator 50 via an opening 60 formed through motor fluid end 56.
  • a filter 62 is positioned proximate to opening 60 in Figure 2.
  • motor fluid end 56 is secured in a stationary position relative to compensator housing 52 and motor 24 permitting fluid end 54 to move axially in response to the expansion and contraction of motor fluid 48.
  • Pump system 20 is disposed in wellbore 32 below the level of fluid 31 in the wellbore.
  • Fluid 31 is in fluid communication with compensator chamber 51 and provides a force (e.g., fluidic pressure) on compensator 50 and thus on motor fluid 48.
  • at least one port 64 is formed through compensator housing 52.
  • a plurality of ports 64 are depicted formed proximate to the bottom end 66 of compensator housing 52.
  • Bottom end 66 is axially distal from the stationary point at which motor fluid end 56 of the compensator is secured.
  • bottom end 66 is axially distal from the top end 68 of compensator housing 52.
  • Compensator chambers and housings commonly do not include equalization ports, instead pressure equalization is provide through a breather hole provide above the compensator housing.
  • Wellbore fluid 31 comprises suspended solids 33 (e.g., sand particles) which generally have a common particle size or distribution (e.g., range) of sizes.
  • the size or general range of particles 33 present in a particular wellbore or anticipated to be encountered in a wellbore can be determined or estimated.
  • ports 64 have a diameter sufficiently large to avoid bridging of particles 33 across port(s) 64. Determination of port sizes to prevent bridging for a known size distribution of particles is known in the art. Sand particles 33 that enter housing 52 will tend to be expelled out of ports 64 when compensator 50 expands.
  • well fluid end 56 of compensator 50 may be externally contoured (e.g., domed) and oriented to urge fluid 31 and solids 33 in chamber 51 toward and out of port(s) 64 when compensator 50 expands.
  • the contoured feature (e.g., dome) of well fluid end 56 has an apex 56a directed toward bottom end 66 and ports 64 ahead of the body of compensator 50.
  • Figures 2 and 3 do not illustrate a filter disposed in compensator chamber 51 separating for example the exterior 50a of compensator 50 from the inlet (e.g., ports 64 in this embodiment) of well fluid 31.
  • a filter may provide an additional point for bridging of particles, thus detrimentally affecting the operation of compensator 50.
  • One or more aspects of the present disclosure may be utilized to promote free operation of compensator 50 and protect compensator 50 from solids 33.
  • a controlled space 70 may be provided between the exterior perimeter 50a of the expanded compensator 50 and compensator housing 52.
  • Controlled space 70 is used generally herein to define a space, in particular an annular space, about the circumference (e.g., exterior surface 50a)of bellows-type compensator 50 that is free of encroachment by compensator 50 when the bellows is expanded ( Figure 2) to provide a type of protective buffer to compensator 50.
  • the controlled annular space may be provided, for example, to prevent damage to compensator 50 from bridging solids 33.
  • the controlled annular space may reduce the occurrence or likelihood that full, and free, expansion and/or contraction of compensator 50 will be limited for example due to accumulation (e.g., bridging) of sand particles 33.
  • sand particles 33 may be the same size or smaller than the diameter of ports 64 to enter into chamber 51.
  • the sand particles may lodge, for example, between a port 64 and/or housing 52 and the exterior 50a of compensator 50. This lodging may cause compensator 50 to be jammed into housing 52 or otherwise prevent compensator 50 from freely expanding or contracting.
  • controlled space 70 may be at least equal to the diameter of port(s) 64 so as to avoid bridging of solids 33.
  • controlled space 70 is equal to two or more diameters of ports 64 to further reduce the ability of solids 33 to bridge from housing 52, in particular ports 64, to bellows 50.
  • the dimensions of compensator 50 are selected such that the distance between exterior surface 50a of expanded compensator 50 and compensator housing 52 provides the desired controlled annular space 70.
  • the bellows does not expand radially into the controlled annular space 70.
  • the controlled space 70 may be established by a device such as frame 72 which is described below. It is noted that Figures 2 and 3 depict several aspects according to the present disclosure that may be used singularly or in combination as depicted in Figures 2 and 3.
  • a frame 72 may be provided to maintain compensator centered and/or spaced away from housing 52 (as depicted in Figures 2 and 3). Bellows type compensators tend to be supple and the middle portion of the compensator in particular can contact or move toward the walls of housing 52. Contacting the walls and or approaching the walls of housing 52 may result in damage to the compensator and/or result in jamming of the compensator thus preventing full and free expansion and/or contraction.
  • frame 72 comprises a plurality of spaced apart elongate, axially extending members 72a (e.g., rods) positioned to maintain compensator 50 substantially centered relative to compensator housing 52.
  • elongate members 72a extend axially from top end 68 to bottom end 66 of motor protector 24.
  • the elongate frame members may not extend from top end 68 to bottom end 66, it may be desired that frame 72 extend at least axially farther than the expanded axial length of compensator 50 to eliminate ledges and the like for compensator 60 (e.g., diaphragms, etc.) to stick on and/or from which sand particles 33 may bridge and prevent free movement of compensator 50.
  • Frame 72 may be constructed in various manners, for example and without limitation, to an elongated tubular member constructed of a metal or other suitable material for the anticipated well conditions.
  • frame 72 provides channels 74 to facilitate expelling sand particles 33 from the bellows portion of frame 72.
  • elongated members 72a are spaced apart so as to define channels 74 between adjacent members 72a.
  • channels 74 may comprise holes, slots or other voids through which sand particles 33 may be expelled.
  • the elongate member frame 72 is utilized to space compensator 50 (e.g., center) from compensator housing 52 and to provide a controlled annular space 70 between compensator 50 and compensator housing 52.
  • Controlled annular space 70 may be provided by sizing and positioning frame 72 so that the selected controlled space 70 is defined between housing 52 and frame 72.
  • channels 74 may be sized to avoid bridging of the particle size distribution of solids 33.
  • FIG 4 is an expanded, sectional schematic of another embodiment of a motor protector and compensator according to one or more aspects of the present disclosure.
  • compensator housing 52 e.g., a tubular member depicted in Figures 2 and 3 is eliminated and frame 72 is utilized.
  • frame 72 comprises a plurality of axially extending, spaced apart elongate members 72a.
  • Frame 72 defines a substantially cylindrical (e.g., tubular) compensator chamber 51 in which bellows 50 is disposed.
  • Elongate members 72a are constructed of metal rods in the depicted embodiment and extend between a top member 68 and bottom member 66.
  • Bottom member 66 may be a solid metal member and/or a member comprising holes or spaces.
  • Top member 68 is flange member adapted to be attached to another module, or section, of pump system 20 such as pump 24 in the depicted embodiment.
  • Top member 68 may be attached in various manners including without limitation, welding, threading and bolting.
  • Top member 68 is illustrated in Figure 4 attached to pump 24 via bolts 76.
  • compensator 50 comprises a bellows.
  • Motor fluid 48 is in fluid communication with the interior 58 of compensator 50 via opening 60.
  • Well fluid 31 is in fluidic communication with the exterior 50a via channels 74 formed through frame 72.
  • channels 74 may be sized to avoid or limit bridging of solids 33.
  • FIG. 5 is an expanded schematic view of another embodiment of a motor protector according to one or more aspects of the present disclosure.
  • Motor protector 26 is depicted positioned below motor 24.
  • Motor fluid 48 is in fluid communication with housing 52 through for example opening 60.
  • Well fluid 31 is in fluid communication with compensator chamber 51 through one or more ports 64 formed through compensator housing 52.
  • motor fluid 48 and well fluid 31 are separated in compensator housing 52 and chamber 51 via a compensator 50.
  • compensator 50 is a plunger.
  • Plunger 50 is a generally cylindrical member having an outer perimeter 80.
  • Plunger 50 comprises a motor fluid end 54 and a well fluid end 56.
  • Well fluid end 56 of depicted plunger 50 is contoured (e.g., domed) for example to promote moving solids 33 ahead of compensator 50 and expelling solids 33 out of chamber 51 through ports 64.
  • plunger 50 is axially moveable along (e.g., through) a stationary seal 78 which is depicted disposed on the interior of compensator housing 52 in response to the expansion and contraction of motor fluid 48.
  • Stationary seal 78 may extend axially between top and bottom axial plunger stops 80, 82.
  • Stationary seal 78 effects the seal on the outer perimeter 84 of plunger 50 as opposed to the seal being effected on a cylinder wall as with pistons.
  • perimeter 80 may be may be coated or treated to form a low friction surface.
  • An example of a suitable surface treatment is a polytetrafluoroethylene (PTFE)-filled electroless nickel plating or chrome plating.
  • Seal 78 may be formed of an elastomeric and/or polymer material.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention porte, selon un ou plusieurs aspects, sur un dispositif de protection de moteur qui comprend un boîtier définissant une chambre de compensateur ; un compensateur disposé dans le boîtier, ayant une extrémité fluidique de moteur en communication fluidique avec un fluide moteur et une extrémité fluidique de puits, le compensateur étant mobile axialement par rapport au boîtier en réponse à l'expansion et à la contraction du fluide moteur ; et un orifice formé à travers le boîtier pour assurer une communication fluidique de l'extérieur du boîtier à l'extrémité fluidique de puits du compensateur. Le compensateur peut être choisi parmi le groupe constitué par un soufflet et un piston.
PCT/US2009/069688 2008-12-30 2009-12-29 Dispositif de protection de moteur de pompe immergée WO2010078326A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2750182A CA2750182A1 (fr) 2008-12-30 2009-12-29 Dispositif de protection de moteur de pompe immergee

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14148708P 2008-12-30 2008-12-30
US61/141,487 2008-12-30

Publications (1)

Publication Number Publication Date
WO2010078326A1 true WO2010078326A1 (fr) 2010-07-08

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US (1) US8328539B2 (fr)
CA (1) CA2750182A1 (fr)
WO (1) WO2010078326A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015069436A3 (fr) * 2013-11-08 2015-08-06 Ge Oil & Gas Esp, Inc. Compensateur de dilatation d'huile pour moteur électrique submersible
WO2017122087A1 (fr) * 2016-01-16 2017-07-20 Accessesp Uk Limited Système de connecteur électrique de fond à compensation de dilatation d'huile, équilibré en pression, à faible encombrement
US11572743B2 (en) 2016-01-16 2023-02-07 Accessesp Uk Limited Method and apparatus for testing of the downhole connector electrical system during installation

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130022480A1 (en) * 2011-07-18 2013-01-24 Baker Hughes Incorporated Mechanical-Hydraulic Pumping System
BR102012003838A2 (pt) * 2012-02-22 2013-10-29 Higra Ind Ltda Bomba anfíbia
CA2829684C (fr) * 2012-10-02 2020-09-15 Henry Research & Development Systemes et procedes pour moteur et pompe lineaire
RU2579015C2 (ru) * 2012-12-29 2016-03-27 "Центр Разработки Нефтедобывающего Оборудования" ("Црно") Компенсатор погружного электродвигателя
US10323641B2 (en) * 2014-05-23 2019-06-18 Baker Hughes, A Ge Company, Llc Below motor equalizer of electrical submersible pump and method for filling
US9982519B2 (en) 2014-07-14 2018-05-29 Saudi Arabian Oil Company Flow meter well tool
WO2016032521A1 (fr) * 2014-08-29 2016-03-03 Ge Oil & Gas Esp, Inc. Chambre de détente de fluide à soufflet protégé
US10541582B2 (en) * 2016-03-08 2020-01-21 Baker Hughes Incorporated ESP motor with sealed stator windings and stator chamber
CA3047278C (fr) 2016-12-16 2021-09-07 Baker Hughes, A Ge Company, Llc Compensateur de pression de lubrifiant de moteur electrique destine a un moteur de pompe submersible
WO2018144467A1 (fr) * 2017-02-03 2018-08-09 Summit Esp, Llc Chambre d'expansion de moteur à soufflet pour pompe électrique submersible
US10781811B2 (en) 2017-06-24 2020-09-22 Ge Oil & Gas Esp, Inc. Volumetric compensator for electric submersible pump
DE102017119158B3 (de) 2017-08-22 2018-10-31 Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung Druckneutraler Elektromotor zum Einsatz in der Tiefsee
US11976660B2 (en) 2019-09-10 2024-05-07 Baker Hughes Oilfield Operations Llc Inverted closed bellows with lubricated guide ring support

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715687A (en) * 1953-12-18 1955-08-16 Smith Corp A O Temperature responsive volume compensator for submersible motors
US3475634A (en) * 1967-08-17 1969-10-28 Alexandr Antonovich Bogdanov Submergible oil-filled electric motor with a protecting unit for the drive of a submergible well pump
US4633970A (en) * 1984-01-03 1987-01-06 Exxon Production Research Co. Distributed marine seismic source
US6688860B2 (en) * 2001-06-18 2004-02-10 Schlumberger Technology Corporation Protector for electrical submersible pumps

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947709A (en) * 1974-06-20 1976-03-30 Ethyl Corporation Protector for submersible electric motors
US6059539A (en) * 1995-12-05 2000-05-09 Westinghouse Government Services Company Llc Sub-sea pumping system and associated method including pressure compensating arrangement for cooling and lubricating
US6242829B1 (en) 1998-03-16 2001-06-05 Camco International Inc. Submersible pumping system utilizing a motor protector having a metal bellows
US7326034B2 (en) * 2005-09-14 2008-02-05 Schlumberger Technology Corporation Pump apparatus and methods of making and using same
US7741744B2 (en) * 2006-03-27 2010-06-22 Schlumberger Technology Corporation System and method for protecting a submersible motor
US10369343B2 (en) * 2006-06-30 2019-08-06 Biocompatibles Uk Limited Apparatus and method to convey a fluid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715687A (en) * 1953-12-18 1955-08-16 Smith Corp A O Temperature responsive volume compensator for submersible motors
US3475634A (en) * 1967-08-17 1969-10-28 Alexandr Antonovich Bogdanov Submergible oil-filled electric motor with a protecting unit for the drive of a submergible well pump
US4633970A (en) * 1984-01-03 1987-01-06 Exxon Production Research Co. Distributed marine seismic source
US6688860B2 (en) * 2001-06-18 2004-02-10 Schlumberger Technology Corporation Protector for electrical submersible pumps

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015069436A3 (fr) * 2013-11-08 2015-08-06 Ge Oil & Gas Esp, Inc. Compensateur de dilatation d'huile pour moteur électrique submersible
WO2017122087A1 (fr) * 2016-01-16 2017-07-20 Accessesp Uk Limited Système de connecteur électrique de fond à compensation de dilatation d'huile, équilibré en pression, à faible encombrement
US11105160B2 (en) 2016-01-16 2021-08-31 Accessesp Uk Limited Low profile, pressure balanced, oil expansion compensated downhole electrical connector system
US11572743B2 (en) 2016-01-16 2023-02-07 Accessesp Uk Limited Method and apparatus for testing of the downhole connector electrical system during installation
US11821266B2 (en) 2016-01-16 2023-11-21 Accessesp Uk Limited Method for testing of the downhole connector electrical system during installation

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US20100172773A1 (en) 2010-07-08
CA2750182A1 (fr) 2010-07-08
US8328539B2 (en) 2012-12-11

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